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Dr. Fogel
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Grade 5 - Review sheet for Test on Light
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Review Sheet – ANSWERS
1. Scientists know that visible light travels in
A straight line
2. When a ray of light reaches an object, it can
BOUNCE
off,
PASS THROUGH
the object or can be
ABSORBED
.
3.
TRANSPARENT
objects let light pass through them easily.
4. _
OPAQUE
objects do not allow light to pass through them.
5.
_
TRANSLUCENT
_ objects let light pass through them but the light rays are then scatter so you cannot see a clear image.
6. The ability of a light ray to bounce off a surface is called
REFLECTION
.
7. The angle at which the light waves strike a surface determines the angle at which the light is
REFLECTED
8. When light falls on rough surfaces, the light rays are
ABSORBED
9. When light rays are scattered,
BLURRY
images are created.
10.In a mirror, light reflects off you and onto the mirror. Some of that light is
REFLECTED
back to your eyes.
11.The image in a mirror is the
REVERSE
of what your are looking at.
12.A flat mirror is called a
PLANE
mirror.
13.A
CONCAVE
mirror is not flat; it curves
inward
like a spoon.
14. If a mirror is curved
outward
, like the back of a spoon, it is a
CONVEX
mirror.
15.A convex mirror makes light rays
DIVERGE
(spread out)
16.A concave mirror makes light rays
_
CONVERGE
(come together)
17.Concave mirrors are found in
HEADLIGHTS
;
SPOTLIGHTS
; and
TELESCOPES
18.
TELESCOPES
use mirrors to capture images of objects in space.
19.The
HUBBLE
telescope has a mirror that is 240cm in diameter.
20.A
_
LENS
is a transparent object that has at least one curved side.
21.Lenses can
MAGNIFY
or
REDUCE
the size of images .
22. Lenses, like mirrors, can be
CONCAVE
_ or
CONVEX
.
23.Light
_
REFRACTS
_ when it passes through either kind of lens mentioned in the question above.
24.Convex lenses are curved outward on one side and the middle is
THICKER
_ than the edges.
25. Concave lenses are curved inward on one side and the middle is
THINNER
than the edges.
26.
_
REFRACTION
is the bending of a light wave as it enters different medium.
27.The color you see when you look at an object depends on the color of light being
REFLECTED
_
28.State at least 3 uses of a Convex lens.
Far-sighted glasses
Microscopes
Magnifying glasses
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1. Scientists know that visible light travels in A straight line
2. When a ray of light reaches an object, it can BOUNCE off, PASS THROUGH the object or can be ABSORBED.
3. TRANSPARENTobjects let light pass through them easily.
4. _OPAQUE objects do not allow light to pass through them.
5. _TRANSLUCENT_ objects let light pass through them but the light rays are then scatter so you cannot see a clear image.
6. The ability of a light ray to bounce off a surface is called REFLECTION.
7. The angle at which the light waves strike a surface determines the angle at which the light is REFLECTED
8. When light falls on rough surfaces, the light rays are ABSORBED
9. When light rays are scattered, BLURRY images are created.
10.In a mirror, light reflects off you and onto the mirror. Some of that light is REFLECTED back to your eyes.
11.The image in a mirror is the REVERSE of what your are looking at.
12.A flat mirror is called a PLANE mirror.
13.A CONCAVE mirror is not flat; it curves inward like a spoon.
14. If a mirror is curved outward, like the back of a spoon, it is a CONVEXmirror.
15.A convex mirror makes light rays DIVERGE(spread out)
16.A concave mirror makes light rays _CONVERGE (come together)
17.Concave mirrors are found in HEADLIGHTS; SPOTLIGHTS; and TELESCOPES
18.TELESCOPES use mirrors to capture images of objects in space.
19.The HUBBLE telescope has a mirror that is 240cm in diameter.
20.A _LENS is a transparent object that has at least one curved side.
21.Lenses can MAGNIFY or REDUCE the size of images .
22. Lenses, like mirrors, can be CONCAVE_ or CONVEX.
23.Light _REFRACTS_ when it passes through either kind of lens mentioned in the question above.
24.Convex lenses are curved outward on one side and the middle is THICKER_ than the edges.
25. Concave lenses are curved inward on one side and the middle is THINNER than the edges.
26._REFRACTION is the bending of a light wave as it enters different medium.
27.The color you see when you look at an object depends on the color of light being REFLECTED_
28.State at least 3 uses of a Convex lens.